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Old 08-31-2011, 12:54 AM   #1
Isoh
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Default Removing intake silencer

Hey everyone. I have a 2011 wrx and i was interested in removing the intake silencer so that my car has a better sound to it. Some people say by doing this you are losing horsepower and some say that is false so what is the real answer. Also if im planning on doing this what is the correct way to do it. Do i just take off the silencer and leave the hole there or do i cover it. Thanks
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Old 08-31-2011, 12:57 AM   #2
lude4life13
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I did it and noticed no difference on my 03 WRX
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Old 08-31-2011, 01:36 AM   #3
subaru_sti_steve
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I would buy a after market intake
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Old 08-31-2011, 01:53 AM   #4
Isoh
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I was going to buy and aftermarket one but i read the intake thread and it said its better overall to leave the stock one so i was planning to just leave it and just delete the silencer so i get the cool "wush" sound from the bpv.
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Old 08-31-2011, 01:58 AM   #5
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Quote:
Originally Posted by Isoh
Hey everyone. I have a 2011 wrx and i was interested in removing the intake silencer so that my car has a better sound to it. Some people say by doing this you are losing horsepower and some say that is false so what is the real answer. Also if im planning on doing this what is the correct way to do it. Do i just take off the silencer and leave the hole there or do i cover it. Thanks
You'll be surprised to learn that your car does not have an intake silencer.

Quote:
Originally Posted by lude4life13
I did it and noticed no difference on my 03 WRX
Different car, different motor, different everything.

Quote:
Originally Posted by subaru_sti_steve
I would buy a after market intake
Stop giving advice.
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Old 08-31-2011, 02:05 AM   #6
filipin0y
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i removed my silencer. and so far, im glad i did that then buy an aftermarket intake. intake sounds dope and removing the silencer cost me nothing. id rather do that than spend 200 on an intake that will do nothing but make my car sound the same as it is now
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Old 08-31-2011, 02:06 AM   #7
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Quote:
Originally Posted by filipin0y
i removed my silencer. and so far, im glad i did that then buy an aftermarket intake. intake sounds dope and removing the silencer cost me nothing. id rather do that than spend 200 on an intake that will do nothing but make my car sound the same as it is now
The 2011 WRX does not have an intake silencer.
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Old 08-31-2011, 02:08 AM   #8
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Thanks for the info xan. So if i would like my bpv to be a bit louder, what should i do?
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Old 08-31-2011, 02:10 AM   #9
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Quote:
Originally Posted by Isoh
Thanks for the info xan. So if i would like my bpv to be a bit louder, what should i do?
TBE helps a little, maybe intake and inlet.
Naturally these need to be tuned for.
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Old 08-31-2011, 02:24 AM   #10
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So that means i need to buy an aftermarket intake? but the intake thread was saying all these bad things about buying one .
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Old 08-31-2011, 02:27 AM   #11
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Quote:
Originally Posted by Isoh
So that means i need to buy an aftermarket intake? but the intake thread was saying all these bad things about buying one .
If you tune for it, you're fine. But then baibai warranty.
If you JUST want additional noise with minimum warranty hassle, an aftermarket recirculating BPV may be the way to go, though I'm not sure how much of a difference they make. I'd recommend a Forge.
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Old 08-31-2011, 02:46 AM   #12
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and this aftermarket bpv will not require a tune or mess up the air to fuel ratio correct?
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Old 08-31-2011, 04:30 AM   #13
USAF Harris
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I'm wondering what everyone has been taking off since the silencer doesn't exist, probably their air filters.
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Old 08-31-2011, 04:53 AM   #14
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Default

Not sure about the newer years but inside the fender was a black box and if my memory serve me correct, you had to remove 3 8mm bolts with a socket set. Once removed you can hear the turbo spool easier.

If you recirculate your BPV then no, it will not mess with your AF ratio but if you vented to atmosphere then it would mess with your AF ratio when you shift and no you can not tune for metered air that just dissapears after the ECU already compensated for it. Hope that make sense.
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Old 09-01-2011, 02:49 PM   #15
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Default Intake Mod

Hi Isoh,
I had the exact same problem as you. I wanted to hear my intake, but didn't want to tune and lose my warranty. I made a solution. What I did was buy a drop in K&N and modify my intake box. I cut the silencer and front off the intake. I now have the sound that I want. I also purchased a replacement box off badcopnodonut504 so that if I need to I can easily to back to stock.
Here is a link to pictures of the mod, the final install and videos of me driving around
https://picasaweb.google.com/jlanner...eat=directlink
I used a sawzall to do the cutting and a dremel to clean up the edges. I made sure to leave the factory mounting bolts in place.
I just did it on Monday but no CEL so far, no noticeable performance change or timing being pulled (liked I had when I bought and returned the K&N CAI).
My goal, like yours, wasn't performance but sound. Maybe I am a dork, but I don't want my car to sound like a Prius.
Josh


Last edited by MacMan; 09-01-2011 at 04:24 PM.
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Old 09-01-2011, 02:58 PM   #16
kcwrxfan
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There is no intake silencer on WRX's, the STI's however do on 2011. If you do an intake and tune you do not lose your warranty. But the dealer could deny a claim if they can prove that intake and tune cause the problem directly.
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Old 09-01-2011, 02:58 PM   #17
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There is no silencer on the 2011s. Again.
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Old 09-01-2011, 03:28 PM   #18
curiousfish
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Quote:
Originally Posted by rkjunior View Post
There is no silencer on the 2011s. Again.
**take note ppl**
08+WRX and STi, no intake silencer in fender.

you can get an aftermarket BOV or intake. To be safe, tune for intake, and be happy. For max sound, be sure to get a SRI.
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Old 10-19-2011, 02:24 PM   #19
EJ_cobrakilla13
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Quote:
Originally Posted by kcwrxfan View Post
There is no intake silencer on WRX's, the STI's however do on 2011. If you do an intake and tune you do not lose your warranty. But the dealer could deny a claim if they can prove that intake and tune cause the problem directly.
talked to my dealership the other day about my warranty and they told me as far as they are concerned the only way to void is to mess with fuel mapping and/or my turbo any other mods are ok as long as i keep up with my maintainance. They were very clear not to do any tuning because it will without a doubt void your warranty.

I have a 2011 STi and had my intake off the other day and this is what it will look like:

http://i1098.photobucket.com/albums/...6/IMG_0898.jpg

I simply removed that white section that drops into the fender well and was able to keep the ram air piece and it did no damage to my airbox so i can return to stock form anytime i need to. It made my intake sound much more noticeable especially under WOT , no CELs but not really any noticeable power.
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Old 10-19-2011, 02:49 PM   #20
bildonia
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2011 WRX and STI have the same intake black box, but on the WRX the hole going to the white section is blocked off and not used.
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Old 10-19-2011, 06:28 PM   #21
al82
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Quote:
Originally Posted by EJ_cobrakilla13
I simply removed that white section that drops into the fender well and was able to keep the ram air piece and it did no damage to my airbox so i can return to stock form anytime i need to. It made my intake sound much more noticeable especially under WOT , no CELs but not really any noticeable power.
I took some tape and wrap it around the top of the white bottle and plug it back in, easy fix!

Intake noise was more audible when cruising.
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Old 10-19-2011, 07:09 PM   #22
EJ_cobrakilla13
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Quote:
Originally Posted by bildonia View Post
2011 WRX and STI have the same intake black box, but on the WRX the hole going to the white section is blocked off and not used.
wonder what purpose it serves then on the STi?
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